CN111891936A - Hoisting device for offshore wind turbine maintenance - Google Patents
Hoisting device for offshore wind turbine maintenance Download PDFInfo
- Publication number
- CN111891936A CN111891936A CN202010525479.6A CN202010525479A CN111891936A CN 111891936 A CN111891936 A CN 111891936A CN 202010525479 A CN202010525479 A CN 202010525479A CN 111891936 A CN111891936 A CN 111891936A
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- Prior art keywords
- pulley
- hoisting
- support
- rotating
- dwang
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
- B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions
- B66C23/828—Bracing equipment acting at an inclined angle to vertical and horizontal directions where the angle is adjustable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model provides a hoisting apparatus for offshore wind turbine maintenance belongs to ocean mechanical equipment technical field. The hoisting device is connected to a tower drum of the offshore wind driven generator through a tower drum connecting component on the tower drum connecting base. Every rotation leg all includes coplanar first dwang, second dwang and fan-shaped support in the portal rotates, has first pulley on the second dwang, and fan-shaped support is installed on first dwang and has two adjacent spacing pulleys. A steel wire rope of the lifting winch bypasses one of the two limiting pulleys and then bypasses the first pulley, and the fan-shaped support can share the acting force needed to be born by the rotating gantry. The gear on the second dwang rotates with the arc rack meshing in the fan-shaped support, and the telescopic cylinder of first dwang of cooperation drive, the focus of rotating the portal and the second end of second dwang can be located different positions, to the promotion of gear box and the blade that is in different positions in marine aerogenerator's the cabin, simple structure and required maintenance cost are lower.
Description
Technical Field
The disclosure relates to the technical field of marine mechanical equipment, in particular to a hoisting device for offshore wind turbine maintenance.
Background
An offshore wind turbine is also called an offshore wind turbine, is a power machine for converting wind energy into mechanical work, and is also a common power generation device. The offshore wind driven generator at least comprises a tower barrel, a machine room and a blade rotor, wherein the top of the tower barrel is provided with the machine room, a generator and a gear box which are in transmission connection are arranged in the machine room, and an output shaft of the gear box is connected with the blades.
The offshore wind turbine is usually installed at sea, and blades, a gearbox and the like in the offshore wind turbine are prone to being broken down by external factors, so that the blades and the gearbox in the offshore wind turbine need to be periodically maintained. When blades and a gear box in an offshore wind turbine are maintained, large ships such as a wind power installation ship and the like are often required to be moved, a crane on the large ships such as the wind power installation ship and the like is used for taking down the blades and the gear box in the wind turbine, and finally the blades and the gear box after maintenance or replacement are lifted to the top of a tower barrel through the crane for installation. However, a large vessel such as a wind turbine installation vessel is required to be used each time the offshore wind turbine is repaired or replaced, which results in high cost for periodic maintenance of the blades and the gear box of the offshore wind turbine.
Disclosure of Invention
The embodiment of the disclosure provides a hoisting device for offshore wind turbine maintenance, which can reduce the cost required by the regular maintenance of blades and a gearbox in an offshore wind turbine. The technical scheme is as follows:
the embodiment of the disclosure provides a hoisting device for offshore wind turbine maintenance, which comprises a tower drum connecting base, a rotating gantry, a lifting winch and a driving assembly, wherein the tower drum connecting base comprises a tower drum connecting assembly arranged on the tower drum connecting base,
the rotating portal frame comprises a cross beam, two parallel and opposite rotating legs, a first pulley and two fan-shaped supports, the two ends of the cross beam are respectively connected with the two rotating legs, each rotating leg comprises a first rotating rod and a second rotating rod which are coplanar, the first end of the first rotating rod is hinged with the tower drum connecting base, the second end of the first rotating rod is hinged with the first end of the second rotating rod, the second end of the second rotating rod is fixed with one end of the cross beam, the first pulley is arranged at the second end of the second rotating rod,
the two fan-shaped supports are connected to the two rotating legs in a one-to-one correspondence manner, the plane where the fan-shaped supports are located is parallel to the plane where the rotating legs are located, each fan-shaped support comprises a first support rod, a second support rod, an arc-shaped rack and two limiting pulleys, the first support rod, the second support rod and the arc-shaped rack are connected end to form a fan-shaped frame, the first end of the first support rod is connected with the first end of the second support rod, the first end of the first support rod and the first end of the second support rod are connected to the first rotating rod, the second rotating rod is provided with a first driving piece and a gear meshed with the arc-shaped rack, the first driving piece is used for driving the gear to rotate, the two limiting pulleys are adjacently arranged on the arc-shaped rack, and the axes of the two limiting pulleys are parallel to each other, the axis of the limiting pulley is perpendicular to the plane where the rotating leg is located, the lifting winch is arranged on the tower drum connecting base, a steel wire rope of the lifting winch bypasses one limiting pulley of the two limiting pulleys and then bypasses the first pulley, and the driving assembly is used for driving the first rotating rod to rotate.
Optionally, the driving assembly comprises a telescopic cylinder, one end of the telescopic cylinder is hinged to the tower cylinder connecting base, and the other end of the telescopic cylinder is hinged to the second end of the second supporting rod.
Optionally, the fan-shaped support further comprises a reinforcing rod, a first end of the reinforcing rod is connected with the arc-shaped rack, and a second end of the reinforcing rod is connected with a second end of the second supporting rod.
Optionally, the revolving gantry further comprises two traction pulleys, the two traction pulleys are all arranged on the second revolving rod, the axes of the two traction pulleys are parallel to each other, the axes of the two traction pulleys are perpendicular to the axis of the first pulley, the two traction pulleys are located on two sides of the first pulley in the axial direction, a steel wire rope of the hoisting winch bypasses one of the two limiting pulleys, and the limiting pulley bypasses one of the two traction pulleys in turn, the traction pulley and the first pulley.
Optionally, the tower connection base includes a first surface and a second surface parallel and opposite to each other, the first surface, the rotating gantry and the driving assembly are disposed on the first surface, and the hoisting winch is disposed on the second surface.
Optionally, the hoisting apparatus further includes a supporting pulley block, the supporting pulley block includes a first supporting pulley and a second supporting pulley which are arranged on the first surface in a rolling manner, an axis of the first supporting pulley and an axis of the second supporting pulley are both parallel to an axis of the first pulley, an end surface of the first supporting pulley and an end surface of the second supporting pulley are in the same plane, the first supporting pulley and the second supporting pulley are located on two sides of the telescopic cylinder, and the first supporting pulley and the second supporting pulley are used for allowing the steel wire rope to pass by and then pass by one of the two limiting pulleys.
Optionally, the hoisting device comprises two of the hoisting winches, the wire rope of one of the hoisting winches being passed around the first sheave on one of the rotating legs, and the wire rope of the other of the hoisting winches being passed around the first sheave on the other of the rotating legs.
Optionally, hoisting apparatus still includes middle play to rise the subassembly, middle play to rise the subassembly and include lifter plate and lifting hook, the lifter plate is located the crossbeam with between two rotation legs, the lifting hook with lifter plate fixed connection, one the wire rope of hoisting winch walks around one on the rotation leg first pulley, another the wire rope of hoisting winch walks around another on the rotation leg first pulley links to each other, just the wire rope of two hoisting winches all sets up on the lifter plate.
Optionally, the intermediate lifting assembly further comprises a first intermediate pulley, a second intermediate pulley, a third intermediate pulley, a first movable pulley and a second movable pulley, wherein axes of the first intermediate pulley, the second intermediate pulley, the third intermediate pulley, the first movable pulley and the second movable pulley are parallel to each other. The first intermediate pulley, the second intermediate pulley and the third intermediate pulley are arranged on the cross beam at intervals, the axis of the first intermediate pulley is vertical to the axis of the first pulley, the first movable pulley and the second movable pulley are arranged on the lifting plate at intervals,
and after the steel wire rope of one lifting winch bypasses the first pulley on the rotating leg, the first middle pulley, the first movable pulley and the second middle pulley are sequentially bypassed, and after the steel wire rope of the other lifting winch bypasses the other first pulley on the rotating leg, the third middle pulley, the second movable pulley and the second middle pulley are sequentially bypassed, and the tail ends of the steel wire ropes of the two lifting winches are connected.
Optionally, the tower tube connecting assembly includes an annular tube, a plurality of pressing blocks and a plurality of second driving members corresponding to the pressing blocks one to one, the annular tube is used for being coaxially sleeved on the tower tube, the annular tube is fixedly connected with the tower tube connecting base, a plurality of mounting holes are circumferentially formed in the annular tube, the pressing blocks are arranged in the mounting holes in a one-to-one correspondence manner, the second driving members are arranged on the annular tube, the second driving members are connected with the pressing blocks in a one-to-one correspondence manner, and each of the second driving members is used for driving the corresponding pressing block to move along the radial direction of the annular tube.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
the hoisting device comprises a tower cylinder connecting base, a rotating portal frame, a lifting winch and a driving assembly, wherein a tower cylinder connecting assembly is arranged on the tower cylinder connecting base. The hoisting device can be connected to the tower of the offshore wind turbine through the tower connecting component on the tower connecting base. In the rotating portal frame, two ends of a cross beam are respectively connected with two rotating legs, the rotating legs respectively comprise a first rotating rod and a second rotating rod which are coplanar, the first end of the first rotating rod is hinged to a tower cylinder connecting base, the second end of the first rotating rod is hinged to the first end of the second rotating rod, the second end of the second rotating rod is fixed to one end of the cross beam, and a first pulley is arranged at the second end of the second rotating rod. Be provided with fan-shaped support on the rotation leg, and fan-shaped support all includes first bracing piece, the second bracing piece, arc rack and two spacing pulleys, first bracing piece, the second bracing piece is fan-shaped frame form with arc rack end to end, the first end of first bracing piece is connected with the first end of second bracing piece, and the first end of first bracing piece and the first end of second bracing piece are all connected on first dwang, have first driving piece and the gear with arc rack toothing on the second dwang, first driving piece is used for drive gear to rotate, two spacing pulleys set up on the arc rack adjacently, the axis of two spacing pulleys is parallel to each other, the axis perpendicular to of spacing pulley rotates leg plane. The steel wire rope of the hoisting winch arranged on the tower drum connecting base can bypass one limiting pulley of the two limiting pulleys and then bypass the first pulley, the fan-shaped support can strengthen the supporting strength of the rotating portal frame, and the two limiting pulleys on the fan-shaped support can avoid the safety problem caused by the rope falling off of the steel wire rope. First driving piece on the second dwang can drive gear revolve for the second dwang can rotate around the centre of a circle of arc rack, when fan-shaped support provides the support for the second dwang, the second dwang can rotate first dwang relatively, the first dwang pivoted drive assembly of cooperation drive, be located second dwang second end wire rope on the first pulley also can rotate different positions, the holistic focus of portal is rotated in the adjustment, in order to promote the gear box that is located the different positions in cabin and blade, and rotate the portal and can not receive the excessive force and damage. Overall structure is simple, can the direct mount on a tower section of thick bamboo, can realize the promotion of the gear box that is in different positions in offshore wind turbine's the cabin and blade simultaneously, and offshore wind turbine maintains or changes all need to use this kind of large-scale boats and ships of wind power installation ship once relatively at every turn, and required maintenance cost is lower.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hoisting device for offshore wind turbine maintenance according to an embodiment of the present disclosure;
fig. 2 is a schematic view illustrating a use state of a lifting device according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a first driving member provided in an embodiment of the present disclosure;
fig. 4 is a front view of a lifting device provided by an embodiment of the present disclosure;
fig. 5 is a simplified schematic diagram of a steel cord winding state provided by an embodiment of the present disclosure;
FIG. 6 is a schematic structural view of a tower coupling assembly provided by embodiments of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a hoisting device for offshore wind turbine maintenance according to an embodiment of the present disclosure. As can be seen in fig. 1, the present disclosure provides a lifting apparatus for offshore wind turbine maintenance, which includes a tower connecting base 1, a rotating gantry 2, a lifting winch 3 and a driving assembly 4, where the tower connecting base 1 includes a tower connecting assembly 11 disposed on the tower connecting base 1.
The rotating portal frame 2 comprises a cross beam 21, two parallel opposite rotating legs 22, a first pulley 23 and two fan-shaped supports 24, two ends of the cross beam 21 are respectively connected with the two rotating legs 22, each rotating leg 22 comprises a first rotating rod 221 and a second rotating rod 222 which are coplanar, the first end of the first rotating rod 221 is hinged to the tower connecting base 1, the second end of the first rotating rod 221 is hinged to the first end of the second rotating rod 222, the second end of the second rotating rod 222 is fixed to one end of the cross beam 21, and the first pulley 23 is arranged at the second end of the second rotating rod 222.
The two fan-shaped supports 24 are correspondingly connected to the two rotating legs 22 one by one, and the plane of the fan-shaped supports 24 is parallel to the plane of the rotating legs 22, each fan-shaped support 24 includes a first support rod 241, a second support rod 242, an arc-shaped rack 243 and two limit pulleys 244, the first support rod 241, the second support rod 242 and the arc-shaped rack 243 are connected end to form a fan-shaped frame, the first end of the first support rod 241 is connected with the first end of the second support rod 242, the first end of the first support rod 241 and the first end of the second support rod 242 are both connected to the first rotating rod 221, the second rotating rod 222 is provided with a first driving member 224 and a gear 223 meshed with the arc-shaped rack 243, the first driving member 224 is used for driving the gear 223 to rotate, the two limit pulleys 244 are adjacently arranged on the arc-shaped rack 243, the axes of the two limit pulleys 244 are parallel to each other, the axes of the limit pulleys are perpendicular to the plane, the hoisting winch 3 is arranged on the tower connecting base 1, the steel wire rope 31 of the hoisting winch 3 bypasses one limiting pulley 244 of the two limiting pulleys 244 and then bypasses the first pulley 23, and the driving assembly 4 is used for driving the first rotating rod 221 to rotate.
The hoisting device comprises a tower cylinder connecting base 1, a rotating portal frame 2, a lifting winch 3 and a driving assembly 4, wherein a tower cylinder connecting assembly 11 is arranged on the tower cylinder connecting base 1. The hoisting device may be connected to the tower 100 of the offshore wind turbine via a tower connection assembly 11 on the tower connection base 1. In the rotating portal frame 2, two ends of the cross beam 21 are respectively connected with the two rotating legs 22, each rotating leg 22 comprises a first rotating rod 221 and a second rotating rod 222 which are coplanar, a first end of the first rotating rod 221 is hinged to the tower tube connecting base 1, a second end of the first rotating rod 221 is hinged to a first end of the second rotating rod 222, a second end of the second rotating rod 222 is fixed to one end of the cross beam 21, and the first pulley 23 is arranged at a second end of the second rotating rod 222. The rotating leg 22 is provided with the sector support 24, each sector support 24 includes a first support rod 241, a second support rod 242, an arc-shaped rack 243 and two limiting pulleys 244, the first support rod 241, the second support rod 242 and the arc-shaped rack 243 are connected end to form a sector frame shape, a first end of the first support rod 241 is connected with a first end of the second support rod 242, the first end of the first support rod 241 and the first end of the second support rod 242 are both connected to the first rotating rod 221, the second rotating rod 222 is provided with a first driving piece 224 and a gear 223 which are meshed with the arc-shaped rack 243, the first driving piece 224 is used for driving the gear 223 to rotate, the two limiting pulleys 244 are adjacently arranged on the arc-shaped rack 243, axes of the two limiting pulleys 244 are parallel to each other, and an axis of the limiting pulley 244 is perpendicular to a plane where the rotating leg 22 is located. The steel wire rope 31 of the hoisting winch 3 arranged on the tower connecting base 1 can wind around one limiting pulley 244 of the two limiting pulleys 244 and then wind around the first pulley 23, the fan-shaped support 24 can enhance the supporting strength of the rotating gantry 2, and the two limiting pulleys 244 on the fan-shaped support 24 can prevent the steel wire rope 31 from being off the rope and causing safety problems. The first driving part 224 on the second rotating rod 222 can drive the gear 223 to rotate, so that the second rotating rod 222 can rotate around the center of the arc-shaped rack 243, the fan-shaped support 24 provides support for the second rotating rod 222, the second rotating rod 222 can rotate relative to the first rotating rod 221, the first rotating rod 221 is driven to rotate in a matching manner to drive the driving component 4, the steel wire rope 31 on the first pulley 23 at the second end of the second rotating rod 222 can also rotate to different positions, the integral gravity center of the rotating gantry 2 is adjusted, so that the gear boxes 400 and the blades 300 at different positions of the cabin 200 can be lifted, and the rotating gantry 2 cannot be damaged due to overlarge stress. The overall structure is simple, the wind power generator can be directly mounted on the tower barrel 100, meanwhile, the gear boxes 400 and the blades 300 which are positioned at different positions in the engine room 200 of the offshore wind power generator can be lifted, and compared with a large ship such as a wind power installation ship, which is needed for maintenance or replacement of the offshore wind power generator every time, the maintenance cost is low.
In addition, when the lifting device in the present disclosure lifts the blades 300 and the gearbox 400, the blades 300 and the gearbox 400 located at different positions of the nacelle 200 can be stably lifted only by adjusting the rotation amplitude of the rotating gantry 2. The telescopic cylinder 41 and the fan-shaped support 23 respectively support the first rotating rod 221 and the second rotating rod 222, so that the process of lifting the blade 300 and the gear box 400 by the rotating gantry 2 can be more stable. Compared with the traditional mode, when the crane on the wind power installation vessel is used for lifting, the whole crane needs to be controlled to adjust the position of the arm support twice to lift the gear box 400 and the blades 300, and the required maintenance cost is lower.
Referring to fig. 1, the driving assembly 4 may include a telescopic cylinder 41, one end of the telescopic cylinder 41 is hinged to the tower connecting base 1, and the other end of the telescopic cylinder 41 is hinged to the second end of the second supporting rod 242.
The telescopic cylinder 41 one end is connected the base 1 with a tower section of thick bamboo and is articulated, the other end of telescopic cylinder 41 is articulated with the second end of second bracing piece 242, the rotation of the first pole 221 of rotating is driven to the second bracing piece 242 in the telescopic cylinder 41 accessible drive fan-shaped support 24, the effort that rotates portal 2 and receive can be shared telescopic rod 41, fan-shaped support 24 and first pole 221 are last, it is little to rotate portal 2 and receive the possibility of damage, can be under the condition that reduces the volume as far as possible, improve the bearing capacity of rotating portal 2, reduce the cost of manufacture.
Referring to fig. 1, an included angle α is formed between the first supporting bar 241 and the second supporting bar 242, and the first rotating bar 221 may be located on an angle bisector of the included angle α.
When the first rotating rod 221 can be located on the bisector of the included angle α, the fan support 24 can effectively support the first rotating rod 221.
Optionally, the sector support 24 may further include a reinforcing bar 245, a first end of the reinforcing bar 245 is connected with the arc-shaped rack 243, and a second end of the reinforcing bar 245 is connected with a second end of the second support bar 242.
The reinforcing rod 245 can reinforce the strength of the fan-shaped support 24, and the second end of the reinforcing rod 245 is connected with the second end of the second support rod 242, so that the acting force transmitted by the telescopic cylinder 41 to the fan-shaped support 24 can be shared, and the stable use of the fan-shaped support 24 can be ensured.
Referring to fig. 1, the sector support 24 may further include a mounting block 246, the mounting block 246 is fixed to the arc-shaped rack 243, the two limiting pulleys 244 may be disposed on the mounting block 246, and the first end of the reinforcing rod 245 may also be connected to the mounting block 246.
Two spacing pulleys 244 all can set up on installation piece 246, and the first end of stiffener 245 also can be connected with installation piece 246, can guarantee the use intensity of arc rack 243, when reducing gear 223 and arc rack 243 meshing, arc rack 243 appears the problem that the amount of deflection leads to the latch, guarantees fan-shaped support 24's stable support and use.
Alternatively, sector supports 24 may be fabricated from Q690 high strength structural steel. The fan support 24 has a high strength as a whole and can bear a large load.
Referring to fig. 1, the rotating gantry 2 further includes two traction pulleys 25, the two traction pulleys 25 are disposed on the second rotating rod 222, axes of the two traction pulleys 25 are parallel to each other, axes of the two traction pulleys 25 are perpendicular to an axis of the first pulley 23, the two traction pulleys 25 are disposed on two sides of the first pulley 23 in the axial direction, and the wire rope 31 of the hoisting winch 3 passes through one of the two limiting pulleys 244 and then sequentially passes through one of the two traction pulleys 25 and the first pulley 23.
The provision of two traction sheaves 25 reduces the likelihood of the wire 31 falling off the first sheave 23 and reduces the force required to be taken up by the telescopic cylinder 41 as much as possible when the lifting device lifts the gearbox 400 and the blade 300.
Fig. 2 is a schematic view of a using state of a lifting device provided by an embodiment of the present disclosure, as can be seen from fig. 1 and 2, fig. 1 and 2 show two different states of the lifting device, the lifting device shown in fig. 1 is in a state of lifting a gear box 400, and the lifting device shown in fig. 2 is in a state of lifting a blade 300. In fig. 1 and 2, the wire rope 31 is wound around one of the two limiting pulleys 244, and the wire rope 31 is not easy to be detached. And the steel wire rope 31 is respectively wound on one traction sheave 25 of the two traction sheaves 25 in fig. 1 and 2, and the steel wire rope 31 is not easy to be off.
Fig. 3 is a schematic view of a use state of the lifting apparatus provided in the embodiment of the present disclosure, and referring to fig. 3, it can be seen that the first driving member 224 is disposed on the second rotating rod 222, and the first driving member 224 drives the gear 223 engaged with the arc-shaped rack 243 to rotate.
Optionally, the second rotating rod 222 is provided with a mounting bracket 225, the mounting bracket 225 includes a connecting plate 2251 and two parallel opposite supporting plates 2252, the two supporting plates 2252 are perpendicular to the connecting plate 2251 and are disposed at an interval on the connecting plate 2251, and one end of the connecting plate 2251 is fixedly connected to the second rotating rod 222. The first driving member 224 is fixedly connected to one support plate 2252, the output shaft 2241 of the first driving member 224 is rotatably supported on the other support plate 2252, the gear 223 is sleeved on the output shaft 2241, and the gear 223 is located between the two support plates 2252.
The mounting bracket 225 is provided to facilitate the connection of the first driving member 224 and the gear 223 to the second rotatable shaft 222, and also to provide an effective support for the gear 223 and the first driving member 224.
Referring to FIG. 1, the tower attachment base 1 may include a first surface 1a and a second surface 1b parallel and opposite to each other, the first surface 1a, the rotating gantry 2 and the drive assembly 4 being disposed on the first surface 1a, and the hoisting winch 3 being disposed on the second surface 1 b.
The tower drum connecting base 1 is arranged to comprise a first surface 1a and a second surface 1b which are parallel and opposite to each other, the rotating portal frame 2 and the driving assembly 4 are arranged on the first surface 1a, the lifting winch 3 is arranged on the second surface 1b, the mounting space required by the whole hoisting device can be reduced, the manufacturing cost of the hoisting device can also be reduced, the gravity center of the whole hoisting device can be centralized, and the whole hoisting device can be conveniently mounted. When the steel wire rope 31 of the hoisting winch 3 is wound on the rotating gantry 2, the steel wire rope 31 abuts against the edge of the tower drum connecting base 1, the tower drum connecting base 1 can bear part of acting force from the steel wire rope 31, part of the acting force from the steel wire rope 31 borne by the rotating gantry 2 is shared, and stable work of the rotating gantry 2 is guaranteed.
Referring to fig. 1, the hoisting apparatus further includes a supporting pulley block 5, the supporting pulley block 5 includes a first supporting pulley 51 and a second supporting pulley 52 rolling on the first surface 1a, an axis of the first supporting pulley 51 and an axis of the second supporting pulley 52 are both parallel to an axis of the first pulley 23, an end surface of the first supporting pulley 51 and an end surface of the second supporting pulley 52 are in the same plane, the first supporting pulley 51 and the second supporting pulley 52 are located at two sides of the driving assembly 4, and the first supporting pulley 51 and the second supporting pulley 52 are used for allowing the steel cable 31 to pass around and then pass around one of the two limiting pulleys 244.
The end face of the first supporting pulley 51 and the end face of the second supporting pulley 52 are in the same plane, the first supporting pulley 51 and the second supporting pulley 52 are used for enabling the steel wire rope 31 to pass by and then pass by the first pulley 24, the first supporting pulley 51 and the second supporting pulley 52 can share acting force on the steel wire rope 31, and the risk that the steel wire rope 31 is broken due to overlarge bearing is reduced. The first supporting pulley 51 and the second supporting pulley 52 are located at two sides of the driving assembly 4, and can also share the acting force borne by the rotating gantry 2, so that the acting force required to be borne by the driving assembly 4 for supporting the rotating gantry 2 is reduced, and the stable work of the rotating gantry 2 and the driving assembly 4 is ensured.
Illustratively, the tower connecting base 1 may also be provided with through holes. The steel wire 31 can pass through the through hole on the sleeve connecting base, so that mutual friction between the steel wire 31 and the tower connecting base 1 is avoided.
Fig. 4 is a front view of the hoisting device provided in the embodiment of the present disclosure, and as can be seen from fig. 4, the hoisting device may include two hoisting winches 3, wherein the wire rope 31 of one hoisting winch 3 passes around the first pulley 24 on one rotating leg 22, and the wire rope 31 of the other hoisting winch 3 passes around the first pulley 24 on the other rotating leg 22.
The two lifting winches 3 may be respectively disposed at both sides of the rotating gantry 2, and the two lifting winches 3 lift the blade 300 or the gear box 400 together, so that the lifting efficiency of the blade 300 and the gear box 400 may be improved while the blade 300 and the gear box 400 are stably lifted.
As can be seen from fig. 4, the hoisting apparatus may further include an intermediate hoisting assembly 6, the intermediate hoisting assembly 6 includes a hoisting plate 61 and a hook 62, the hoisting plate 61 is located between the cross beam 21 and the two rotating legs 22, the hook 62 is fixedly connected to the hoisting plate 61, the wire rope 31 of one hoisting winch 3 is connected to the first pulley 23 of one rotating leg 22, the wire rope 31 of the other hoisting winch 3 is connected to the first pulley 23 of the other rotating leg 22, and the wire ropes 31 of both hoisting winches 3 are disposed on the hoisting plate 61.
The intermediate hoisting assembly 6 comprises a lifting plate 61 and a hook 62, and the two hoisting winches 3 jointly lift the lifting plate 61 and the hook 62 connected to the lifting plate 61, so that the stable lifting of the gear box 400 and the blade 300 can be facilitated.
As can be seen with reference to fig. 4, the intermediate hoisting assembly 6 further comprises a first intermediate pulley 63, a second intermediate pulley 64, a third intermediate pulley 65, a first movable pulley 66 and a second movable pulley 67, the axes of which are parallel to each other. The first intermediate pulley 63, the second intermediate pulley 64 and the third intermediate pulley 65 are provided on the cross beam 21 at an interval, the axis of the first intermediate pulley 63 is perpendicular to the axis of the first pulley 24, and the first movable pulley 66 and the second movable pulley 67 are provided on the lift plate 61 at an interval. The wire rope 31 of one hoisting winch 3 passes around the first pulley 23 on one rotating leg 22, then sequentially passes around the first intermediate pulley 63, the first movable pulley 66 and the second intermediate pulley 64, the wire rope 31 of the other hoisting winch 3 passes around the first pulley 23 on the other rotating leg 22, then sequentially passes around the third intermediate pulley 65, the second movable pulley 67 and the second intermediate pulley 64, and the ends of the wire ropes 31 of the two hoisting winches 3 are connected.
The middle lifting assembly 6 is arranged above, when the two lifting winches 3 work, a first movable pulley 66 and a second movable pulley 67 on the lifting plate 61, and a first middle pulley 63, a second middle pulley 64 and a third middle pulley 65 on the cross beam 21 form a 4-multiplying-power pulley, so that labor is saved when the lifting winches 3 pull the steel wire rope 31 to lift the blade 300 or the gear box 400, and the burden of the lifting winches 3 can be reduced.
Alternatively, a mounting plate 68 is detachably connected to the cross beam 21, and the first intermediate pulley 63, the second intermediate pulley 64, and the third intermediate pulley 65 may be disposed on the mounting plate 68. The installation and winding of the first intermediate pulley 63, the second intermediate pulley 64 and the third intermediate pulley 65 are facilitated.
Illustratively, the first intermediate pulley 63, the third intermediate pulley 65, the first movable pulley 66 and the second movable pulley 67 may be distributed around the second intermediate pulley 64. Facilitating the winding of the wire rope 31.
As can be seen with reference to fig. 4, the wire rope 31 of the hoisting winch 3 can be wound onto the intermediate hoisting assembly 6 after having passed around the traction sheave 25.
The traction pulley 25 can guide the steel wire rope 31, so that the steel wire rope 31 can smoothly enter the middle lifting assembly 6 after being wound around, and the blades 300 and the gear box 400 are stably lifted.
Fig. 5 is a simplified schematic diagram of the winding state of the steel wire rope provided by the embodiment of the present disclosure, and referring to fig. 5, it can be seen that the steel wire rope 31 of one hoisting winch 3 can pass around one of the two limiting pulleys 244, the first pulley 23, and finally the first intermediate pulley 63, the first movable pulley 66, and the second intermediate pulley 64, and the steel wire rope 31 of the other hoisting winch 3 can pass around one of the two limiting pulleys 244, the first pulley 23, and finally the third intermediate pulley 65, the second movable pulley 67, and the second intermediate pulley 64.
Fig. 6 is a schematic structural diagram of the tower connecting assembly provided in the embodiment of the present disclosure, and as can be seen from fig. 6, the tower connecting assembly 11 may include an annular cylinder 111, a plurality of pressing blocks 112, and a plurality of second driving members 113 corresponding to the plurality of pressing blocks 112 one to one, the annular cylinder 111 is configured to be coaxially sleeved on the tower drum 100, a plurality of mounting holes 111a are provided in a circumferential direction of the annular cylinder 111, the plurality of pressing blocks 112 are disposed in the plurality of mounting holes 111a in a one-to-one correspondence manner, the plurality of second driving members 113 are disposed on the annular cylinder 111, the plurality of second driving members 113 are connected to the plurality of pressing blocks 112 in a one-to-one correspondence manner, and each second driving member 113 is configured to drive the corresponding pressing block 112 to move along a radial direction of.
The tower connecting assembly 11 with the above structure can drive the pressing block 112 in the mounting hole 111a through the second driving member 113, and the annular cylinder 111 moves radially to press the outer wall of the tower 100, so that the annular cylinder 111 is fixed on the tower 100, the tower connecting base 1 is also fixed on the tower 100, and after the tower connecting base 1 is fixed, the gantry 2 and the hoisting winch 3 are rotated to work. Facilitating the securing of the hoist to the tower 100.
Alternatively, the tower attachment base 1 may be fixed to one end of the annular cylinder 111, and the first surface 1a of the tower attachment base 1 may be parallel to the end surface of the annular cylinder 111. At this time, the annular cylinder 111 can also support the tower cylinder connecting base 1, so that stable use of the hoisting device is ensured.
The second driving member 113 may be a jack or a telescopic cylinder, and the disclosure is not limited thereto.
Alternatively, a rubber layer may be disposed on the surface of the compression block 112. The friction between the pressing block 112 and the outer wall of the tower tube 100 can be increased, and the abnormal movement of the annular tube 111 is avoided.
Illustratively, the annular cylinder 111 may include two detachably connected semi-annular plates 1111. The tower tube connecting assembly 11 is convenient to disassemble and assemble.
It should be noted that the tower attachment base 1 may be attached to one of the half ring plates 1111. Is convenient for disassembly and assembly.
Alternatively, the first driving member 224 and the second driving member 113 in the present disclosure may be both motors or motors. And the implementation is easy. The present disclosure is not so limited.
Although the present invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A hoisting device for offshore wind turbine maintenance is characterized by comprising a tower drum connecting base (1), a rotating gantry (2), a lifting winch (3) and a driving assembly (4), wherein the tower drum connecting base (1) comprises a tower drum connecting assembly (11) arranged on the tower drum connecting base (1),
rotate portal (2) and include crossbeam (21), two parallel relative rotation leg (22), first pulley (23) and two fan-shaped supports (24), the both ends of crossbeam (21) respectively with two rotation leg (22) are connected, every rotation leg (22) all include coplanar first dwang (221), second dwang (222), the first end of first dwang (221) with the base (1) is connected to the tower section of thick bamboo is articulated, the second end of first dwang (221) with the first end of second dwang (222) is articulated, the second end of second dwang (222) is fixed with the one end of crossbeam (21), first pulley (23) set up the second end of second dwang (222),
the two fan-shaped supports (24) are correspondingly connected to the two rotating legs (22) one by one, the plane where the fan-shaped supports (24) are located is parallel to the plane where the rotating legs (22) are located, each fan-shaped support (24) comprises a first support rod (241), a second support rod (242), an arc-shaped rack (243) and two limiting pulleys (244), the first support rod (241), the second support rod (242) and the arc-shaped rack (243) are connected end to form a fan-shaped frame, the first end of the first support rod (241) is connected with the first end of the second support rod (242), the first end of the first support rod (241) and the first end of the second support rod (242) are connected to the first rotating rod (221), the second rotating rod (222) is provided with a first rotating driving piece (242) and a gear (223) meshed with the arc-shaped rack (243), the first driving piece (224) is used for driving the gear (223) to rotate, the two limiting pulleys (244) are adjacently arranged on the arc-shaped rack (243), the axes of the two limiting pulleys (244) are parallel to each other, the axis of the limiting pulley (244) is perpendicular to the plane of the rotating leg (22), the lifting winch (3) is arranged on the tower connecting base (1), a steel wire rope (31) of the lifting winch (3) bypasses one limiting pulley (244) of the two limiting pulleys (244) and then bypasses the first pulley (23), and the driving assembly (4) is used for driving the first rotating rod (221) to rotate.
2. Hoisting device for offshore wind turbine maintenance according to claim 1, wherein the drive assembly (4) comprises a telescopic cylinder (41), one end of the telescopic cylinder (41) being hinged to the tower connection base (1), the other end of the telescopic cylinder (41) being hinged to the second end of the second support bar (242).
3. Hoisting device for offshore wind turbine maintenance, according to claim 2, characterized in that the sector support (24) further comprises a stiffening rod (245), a first end of the stiffening rod (245) being connected with the arc-shaped rack (243), a second end of the stiffening rod (245) being connected with a second end of the second support bar (242).
4. Hoisting device for offshore wind turbine maintenance according to any of claims 1-3, characterized in that the rotating gantry (2) further comprises two traction pulleys (25), both traction pulleys (25) being arranged on the second rotating rod (222), the axes of the two traction pulleys (25) being parallel to each other and the axes of the two traction pulleys (25) being perpendicular to the axis of the first pulley (23), the two traction pulleys (25) being located on both sides of the first pulley (23) in the axial direction, the wire rope (31) of the hoisting winch (3) passing around one of the two limiting pulleys (244) and then passing around one of the two traction pulleys (25) and the first pulley (23) in turn.
5. Lifting device for offshore wind turbine maintenance, according to any of the claims 1 to 3, characterized in that the tower connection foundation (1) comprises a first surface (1a) and a second surface (1b) parallel and opposite to each other, the first surface (1a), the rotating gantry (2) and the drive assembly (4) being arranged on the first surface (1a), the hoisting winch (3) being arranged on the second surface (1 b).
6. Hoisting device for offshore wind turbine maintenance according to claim 5, characterized in that the hoisting device further comprises a support pulley block (5), the support pulley block (5) comprises a first support pulley (51) and a second support pulley (52) arranged rolling on the first surface (1a), the axis of the first support pulley (51) and the axis of the second support pulley (52) are both parallel to the axis of the first pulley (23), the end face of the first support pulley (51) and the end face of the second support pulley (52) are in the same plane, and the first support pulley (51) and the second support pulley (52) are located on both sides of the driving assembly (4), the first support pulley (51) and the second support pulley (52) are used for the steel cable (31) to pass around, and passes around one of the two limiting pulleys (244) of the limiting pulleys (244).
7. Hoisting device for offshore wind turbine maintenance according to any of claims 1-3, characterized in that the hoisting device comprises two hoisting winches (3), the wire rope (31) of one of the hoisting winches (3) being passed around the first pulley (23) on one of the turning legs (22), and the wire rope (31) of the other of the hoisting winches (3) being passed around the first pulley (23) on the other turning leg (22).
8. Hoisting device for offshore wind turbine maintenance according to claim 7, characterized in that the hoisting device further comprises an intermediate hoisting assembly (6), the intermediate hoisting assembly (6) comprising a hoisting plate (61) and a hook (62), the hoisting plate (61) being located between the cross beam (21) and the two turning legs (22), the hook (62) being fixedly connected to the hoisting plate (61), the wire rope (31) of one of the hoisting winches (3) being passed around the first sheave (23) on one of the turning legs (22), the wire rope (31) of the other hoisting winch (3) being passed around the first sheave (23) on the other turning leg (22) being connected, and the wire ropes (31) of both hoisting winches (3) being arranged on the hoisting plate (61).
9. Hoisting device for offshore wind turbine maintenance according to claim 8, characterized in that the intermediate hoisting assembly (6) further comprises a first intermediate pulley (63), a second intermediate pulley (64), a third intermediate pulley (65), a first movable pulley (66) and a second movable pulley (67) having axes parallel to each other, the first intermediate pulley (63), the second intermediate pulley (64) and the third intermediate pulley (65) being arranged on the cross beam (21) at intervals, the axis of the first intermediate pulley (63) being perpendicular to the axis of the first pulley (23), the first movable pulley (66) and the second movable pulley (67) being arranged on the lifting plate (61) at intervals,
one wire rope (31) of hoisting winch (3) is walked around one rotate on leg (22) after first pulley (23), walk around in proper order first middle pulley (63), first movable pulley (66) and second middle pulley (64), another wire rope (31) of hoisting winch (3) is walked around another rotate on leg (22) after first pulley (23), walk around in proper order third middle pulley (65), second movable pulley (67) with second middle pulley (64), just the end of wire rope (31) of two hoisting winch (3) links to each other.
10. The hoisting device for offshore wind turbine maintenance according to any one of claims 1 to 3, wherein the tower connecting assembly (11) comprises an annular cylinder (111), a plurality of pressing blocks (112) and a plurality of second driving members (113) corresponding to the pressing blocks (112) one to one, the annular cylinder (111) is used for being coaxially sleeved on the tower drum 100, the annular cylinder (111) is fixedly connected with the tower connecting base (1), a plurality of mounting holes (111a) are formed in the circumferential direction of the annular cylinder (111), the pressing blocks (112) are correspondingly arranged in the mounting holes (111a), the second driving members (113) are arranged on the annular cylinder (111), the second driving members (113) are correspondingly connected with the pressing blocks (112), and each second driving member (113) is used for driving the corresponding pressing block (112) to move along the radial direction of the annular cylinder (111) And (6) moving.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010525479.6A CN111891936B (en) | 2020-06-10 | 2020-06-10 | Lifting device for maintaining offshore wind turbine |
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| CN202010525479.6A CN111891936B (en) | 2020-06-10 | 2020-06-10 | Lifting device for maintaining offshore wind turbine |
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| CN111891936B CN111891936B (en) | 2023-06-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113928983A (en) * | 2021-10-26 | 2022-01-14 | 湖南省中南桥梁安装工程有限公司 | Hoisting mechanism of top damage prevention hoisting rope |
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|---|---|
| CN111891936B (en) | 2023-06-27 |
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